/*
 * Copyright (c) 2010-2023. Axon Framework
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.axonframework.common;

import java.util.List;
import java.util.stream.Collectors;

/**
 * Utility methods for operations on lists.
 *
 * @author Stefan Andjelkovic
 * @since 4.4
 */
public abstract class ListUtils {

    private ListUtils() {
        // prevent instantiation
    }

    /**
     * Returns a new list containing unique elements from the given {@code list}. Original list is not modified.
     *
     * @param list original list that will not be modified
     * @param <E>  the type of elements in the list
     * @return List with unique elements
     */
    public static <E> List<E> distinct(final List<E> list) {
        return list.stream().distinct().collect(Collectors.toList());
    }
}
